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Standard XII
Chemistry
Valency and Oxidation State
What is the o...
Question
What is the oxidation number of underlined element?
H
2
S
–
–
O
4
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Solution
Let the oxidation number of S in
H
2
S
–
–
O
4
be
x
.
Since the overall charge on the compound is
0
, the sum of oxidation states of all elements in it should be equal to
0
.
Therefore,
2
(
+
1
)
+
x
+
4
(
−
2
)
=
0
or,
x
=
+
6
Hence, the oxidation number of
S
in
H
2
S
–
–
O
4
is
+
6
.
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